package com.atguigu.jucdemo.test;

import ch.qos.logback.core.util.TimeUtil;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class SyncVSLockDemo {
    public synchronized void m1() {
        System.out.println(Thread.currentThread().getName() + "\t" + "----come in ");

        try {
            TimeUnit.SECONDS.sleep(3);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    private final Lock lock = new ReentrantLock();

    public void m2() {
        if (lock.tryLock()) {
            try {
                System.out.println(Thread.currentThread().getName() + "\t" + "----come in ");
                TimeUnit.SECONDS.sleep(3);
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                lock.unlock();
            }
        } else {
            System.out.println(Thread.currentThread().getName() + "\t" + "抢锁失败 ");
        }
    }

    public void m3() {
        try {
            if (lock.tryLock(2L,TimeUnit.SECONDS)) {
                try {
                    System.out.println(Thread.currentThread().getName() + "\t" + "----come in ");
                    TimeUnit.SECONDS.sleep(3);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    lock.unlock();
                }
            } else {
                System.out.println(Thread.currentThread().getName() + "\t" + "超过两秒抢锁失败 ");
            }
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }


    public static void main(String[] args) {
        SyncVSLockDemo syncVSLockDemo = new SyncVSLockDemo();
        new Thread(() -> {
            syncVSLockDemo.m3();
        }, "张三").start();
        new Thread(() -> {
            syncVSLockDemo.m3();
        }, "李四").start();
    }
}

